DEARBORN, Mich., Nov. 11, 2010 - You hold two keys: One has a black Boss logo, the other red: Either will start your 2012 Mustang Boss 302. Slide the all-black key into the lock cylinder, give it a twist and you're treated to 444 ponies worth of smooth, streetable driving joy. Or choose red - the TracKey - and you have a competition-ready track car. (11/11/2010)